Every Track ball is created for a specific purpose; each new ball fills a gap and advances the arsenal. The Sensor Solid is a unique blend of power and control that will conquer a variety of medium to heavy oil conditions. The power and ability to handle oil come from the MR-6 Solid cover, finished with 2000-grit Siaair. The Regulator is a lower flaring core that provides control and consistency, as recently found in the Sensor Pearl. The Sensor Solid is a great option for any level of bowler and is the ultimate choice for dominating the lanes.